14 Replies Latest reply: Feb 11, 2013 7:24 AM by Mirthur
Ken Abbott Level 1 Level 1
My early 2008 iMac won't pair with my new Trackpad. Is this a known issue? Do I need a double-secret-probation software update (I update religiously). Do I have to return the trackpad?

iMac, Mac OS X (10.5.8)
  • rkaufmann87 Level 9 Level 9
    It won't work because you are using Leopard. If you read the specifications for the Magic Trackpad it requires Snow Leopard V 10.6.4 or later.
  • rowdoc Level 1 Level 1
    I have the same problem with my new trackpad. My 2006 Imac has a new harddrive running Snow Leopard 10.6.6. It will discover my trackpad, but says that pairing is unsuccessful. I also use a wireless mouse. Is that the problem?
  • rkaufmann87 Level 9 Level 9
    Both devices should be able to pair at the same time. Try these actions in this order. First Repair Disk Permissions in Disk Utility (Applications - Utilities - Disk Utility) and if then try it, if that doesn't work then do a SMC Reset using the following instructions. And if that doesn't work then restart the computer in Safe Mode and try to pair there.


    • Shut down the computer.
    • Unplug the computer's power cord and all peripherals.
    • Press and hold the power button for 5 seconds.
    • Release the power button.
    • Attach the computers power cable.
    • Press the power button to turn on the computer.


    • Shut down the computer.
    • Locate the following keys on the keyboard: Command, Option, P, and R. You will need to hold these keys down simultaneously in step 4.
    • Turn on the computer.
    • Press and hold the Command-Option-P-R keys. You must press this key combination before the gray screen appears.
    • Hold the keys down until the computer restarts and you hear the startup sound for the second time.
    Release the keys.

  • rowdoc Level 1 Level 1
    Thank you for your detailed instructions. I did everything you suggested to the letter, including SMC reset and PRAM reset, but unfortunately it did not work. Bluetooth still finds my trackpad, but pairing is unsuccessful.

    Any other suggestions? You suggested I should start in Safe Mode, but I do not know how to do that.
  • rowdoc Level 1 Level 1
    My system is 10.6.6. Sorry I did not update the OS.
  • Level 8 Level 8
    To startup in Safe Mode, the knowledge base article Roger pointed to says:

    To start up into Safe Mode (to Safe Boot), do this:

    1. Be sure the computer is shut down.
    2. Press the power button.
    3. Immediately after you hear the startup tone, hold the Shift key. The Shift key should be held as soon as possible after the startup tone but not before.
    4. Release the Shift key when you see the gray Apple icon and the progress indicator (looks like a spinning gear).
  • rkaufmann87 Level 9 Level 9
    As Ralph mentioned the instructions for starting in Safe Mode are in the link I provided. Try booting in Safe Mode and if you are still unsuccessful syncing the MTP with your iMac call AppleCare for instructions.
  • Charles Laine Level 1 Level 1
    If you have USB Overdrive installed, uninstall it! And make sure all of it's remnants have been successfully removed. I was having the same problem. A 2008 Mac Pro would not properly pair with the Magic Trackpad. But when I uninstalled USB Overdrive, it worked like magic!
  • RonaldEustace Level 1 Level 1
    I had this issue on my 4GB 3.o6 GHz Intel Core 2 Duo iMac, running 10.6.7... MTP worked great out of the box for 6 months then stopped dead in it's tracks (the other Bluetooth mouse and keyboard worked fine). Apple Bluetooth Software Version: 2.4.0f1

    Thanks to rkaufmann87 the PRAM reset worked like a charm!
  • Pablo Fanque Level 1 Level 1
    I had a similar problem when I changed my hard drive in snow leopard. Bluetooth would search, find my MTP but when I clicked 'continue' it would say 'pairing unsuccessful'.
    I got it to work by going to :
    System preferences>bluetooth>choose as favorite (gear wheel thingy) click '+' lower left>set up assistant, find MTP, click on it- this appears:

    Your computer is already paired with that device. Do you wish to remove the pairing and set up the device again?

    Click continue and voila!
  • basilio_1 Level 1 Level 1

    Thank you pablo, for your easy AND effective solution!

  • Frank Neville Level 1 Level 1

    Excellent Pablo

  • iSean007 Level 1 Level 1

    Brill - thanks Pablo

  • Mirthur Level 1 Level 1

    I have a variation on all this. I bought my Trackpad a little while ago with a wireless kepad. Both have worked fine. Knowing I was going away for a long weekend, I shut down my iMac. On re-starting it, the keypad is fine, but the Trackpad won't pair with the mothership. I've changed the batteries, tried Pablo's fix - nothing. Anyone any thoughts on this?